NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

17 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 650
ONVOY, LLC - CA 11
T-MOBILE USA, INC. 4
BANDWIDTH.COM CLEC, LLC - CA 2
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2017-02-22 650-447-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C MT VIEW CA
2017-02-17 650-268-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C PESCADERO CA
2017-02-15 650-448-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2017-02-15 650-448-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2017-02-15 650-448-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2017-02-14 650-457-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SSNFRNCSCO CA
2017-02-01 650-509-1XXX 1000–1999Assigned ASTOUND BROADBAND, LLC - CA 485E PALO ALTO CA
2017-01-18 650-250-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2017-01-18 650-441-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2017-01-18 650-441-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 PALO ALTO CA
2017-01-09 650-304-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2017-01-09 650-304-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2017-01-09 650-304-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2016-12-08 650-304-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2016-12-08 650-993-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNFC JUNPR CA
2016-12-07 650-476-1XXX 1000–1999Assigned METROPCS, INC. 5562 HALFMOONBY CA
2016-11-28 650-447-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MT VIEW CA
2016-11-28 650-476-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-11-28 650-476-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-11-28 650-476-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-11-14 650-447-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MT VIEW CA
2016-11-14 650-850-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WOODSIDE CA
2016-10-28 650-865-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-10-28 650-865-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-10-26 650-448-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2016-10-26 650-779-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDWOOD CY CA
2016-10-26 650-850-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODSIDE CA
2016-10-19 650-304-3XXX 3000–3999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L PALO ALTO CA
2016-10-12 650-608-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2016-10-12 650-608-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2016-09-30 650-733-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PACIFICA CA
2016-09-27 650-484-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SAN MATEO CA
2016-09-21 650-476-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-09-21 650-476-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-09-21 650-476-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-09-15 650-304-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PALO ALTO CA
2016-09-15 650-304-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-09-15 650-304-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-09-15 650-304-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-09-15 650-448-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2016-09-15 650-484-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN MATEO CA
2016-09-15 650-484-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-09-15 650-620-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNCRL-BLMT CA
2016-09-15 650-701-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDWOOD CY CA
2016-09-14 650-448-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MT VIEW CA
2016-09-14 650-516-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PACIFICA CA
2016-09-14 650-680-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOS ALTOS CA
2016-09-14 650-689-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MILLBRAE CA
2016-09-13 650-750-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HALFMOONBY CA
2016-09-07 650-304-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.